形态描述
体长，圆筒形。头锥形。吻突出。口下位，马蹄形，下颌无角质。唇厚，肉质，下唇两侧叶前部连接，无中叶，后缘内卷。须1对，口角须长。体被细鳞，体侧近腹部处鳞片退化，埋于皮下或胸、腹部裸露。侧线鳞98—117，其大小约为体鳞的2倍，臀鳞发达。背鳍无硬刺，起点在腹鳍之前。体背灰褐色，布有均匀、不规则的小斑点，腹部灰白，头上部及背、胸、尾鳍具有多数斑点
生物学
Prefer to live in main streams and tributaries of large rivers, sometimes inbabit secondary wate bodies. It migrates upstream in spring and downstream in autumn.
国内分布
Jingshajing Riv.